No offense or anything but you have not even 1% proof or anything to say about that because you never know! Things in this world are very different you know and there are lots of things we do not know, so either if there is or not, you shouldn't fully disagree with something you have no proof of to support it..

We have the proof of an awful lot of years of experiance to back our views and while that is not concrete it cannot be dimisssed. For me I would guess that in my lifetime I have had several hundred episodes of SP and slowly worked my way past them to gain understanding that allows me to now use these experiances.

Who are you I asked, the reply "dont be silly, we are your daughers" many years before they were born

Lol a lot of people had proof though that demons were real. Recently my friend's brother had to go to a mental hospital because he was going crazy, but then was sent to a church and was revived. You never know.